Adjustable bearing plate for wire-line pumping jacks



Patented Dec. 6,1927.

-UNITEDFST.

JAMES R. ROBE; or 'oIL'ron,-'oKLAHoMa.

ADJUSTABLE BEARING PLATE son wins-L NE ,PUMPiNG' JAcKs.

Application filed March 15, 1927. Seria1No. 175,617.

This invention relates to adjustable bearing plates for wire linepumping jacks.

An important object of the invention is to provide a dle forming thepivot for the pumping jack ,structure to be adjusted .toward or awayfrom the well and likewise to be rotatably adjusted as to its ang1e,sothat it will be arranged transversely of a radius intersecting the axisof the well, regardless of improper application of the which it ismounted. V i A still further object of the invention is to provide adevice of this character'which may be relatively cheaply produced and isreadily applied. V a i j i. These and other objects I attain by theconstruction shown in the accompanying drawings, wherein for the'purpose of illus-.

tration is shown a preferred embodiment of .my invention and whereinFigure 1 is a side elevation of a pumping jack mounted upon anadjustable bearing plate constructed in accordance. with my 111-vention;

Figure 2 is a plan view of the bearing plate; 7 j V Figure3 is a sectionon the line 3-3 of Figure 2; i

Figure 4 is a section on the line eP- of tending transversely of thegeneral plane of exerts its pull, while thelugs are relative- Figure 2..

Referring now more particularly to the drawings, the numeral 10generally designates a wire line pumping jack and 11 the saddle thereof,which comprises a shaft exthe jack structure. In accordancewith myinvention, these saddles are usually pivoted uponbase castings (notherein illustrated) 'which are mounted upon sills 12 arranged adjacentto and extending radially from the well casing 13. V

,In accordance with my invention, I provide a cast base 14, at presentillustrated as provided with apertured ears 15 through which securingelements may be extended to attach the same to the sills 12; This baseis arranged with its longitudinal axis approximately transverse to aradius of the well casing 13 and is provided centrally with alongitudinally extending slot 16. Adjacent each end, the base has formedtherethrough a longitudinally extending slot 17, the lower end of whichopens into a recess 18, the upper wall of whichis provided withtransverse sorrufitetionsjfii Arranged with n. eash re:

device which will permit the sad-- base proper to the sills 'upon wallsof the recess and has its upper face corrugated for coaction with thecorruga-- tions 19 of the upper recess w all.. These plates 20constitute washer plates and are boss is a block 20, which fits betweenthe side apertured for the passage of bolts 21 and,

provided withrecesses 22 in their lower faces receiving and fitting theheads of the bolts to prevent rotation thereof. V

' The upper surface of p v thebase is flat and has seated thereon asaddle casting 23,which hasa lower surface flat, with the exception of acentrally located circular lug 24:, the diameter of which is the same asthe width of the slot 16 of the base. This jlug extends into the baseand serves not only as a pivot about which the saddle casting may berotated, but i also an additional function, which will'hereinafterbecome apparent. The ends of the saddle casting 23 have arcuate slots 25curved with the lug 24 as a center, and ofasize to p permit passageof-the securingelements 21.

The upper face of the casting 23 adjacent the arcuate slots is providedwith corrugations 26 transverseto the slots 25 and adapted for coactionwith corrugations upon the under surface of washer plates 27throughwhich" the securing elements 21 likewise extend and against which thenuts 28 of the securing elements abut.

Immediately inwardly of the slots, the saddle casting is provided withopposed pairs of transversely spac edlugs 29 and 30, the

lugs 29 being relatively large and disposed at that's'ide of the saddlecasting from which the wire line 31 of'the pumping apparatus whichengages the corresponding end of the,

saddle'and serves to prevent movement thereof longitudinally of thesaddle casting. Be-

tween the pairs of lugs 29 and 30, the upper face of the saddle castingis grooved to re'-' ceive and fit the saddle, as at 32.

In applying thebase plate, it is applied to the sills 12 with its center'as nearly as possible in a direct line between the pump rods of thewellcasing 13 and the point from which the wire line 31 is operated. Thesaddle casting 23is then seated thereon and the securing elements 21left looseuntil the jack has been positioned. By placing the line'understrain which tends to lift the pump rods, this jack will naturallyassume a position where no side strains are applied thereto. In order toaccomplish this, it may be necessary that the saddle casting rotateabout itslug 2 .1: as a pivot and also shift longitudinally with respectto the base casting. Just as soon as the jack has assumed its properposition, the securing elements may be tightened and the saddle castingwill be firmly held against displacement. The lug 24, during operationof the pump, serves to prevent the strain exerted by the wire line frombeing placed directly against the securing elements 21. The larger lugs29 of each pair are preferably each formed with a lubricant receivingpocket 33 communicating wtn the saddle confronting face of the lug.These pockets may be provided with hinged covers 345. v 7

Since the cointtructiou hereinhefore set forth is capable of a certainrange of change and modification without materially departing from thespirit of the invention, I do not limit myse f to such specificstructure except as hereinafter claimed.

I claim 1. In a saddle mounting for the wire line pumping jacks of oilwell pumps, a base adapted to be secured to'a suitable support andhaving a longitudinally extending slot, a saddle casting having acircular lug lit ting in the slot, the base having adjacent each endthereof a longitudinally extending slot, the saddle casting havingadjacent each end thereof an arcuate slot and a securing elementextending through each arcuate slot and the corresponding longitudinalslot of the base for securing saidsaddle casting in adjusted position.

2. In a saddle mounting for the wire line pumping jacks of oil wellpumps, :1 base adapted to be secured to a suitable support and having alongitudinally extending slot, a saddle casting having a circular luglitting in the slot, the base having adjacent each endthereof alongitudinally extendingslot, the saddle casting having adjacent eachend thereof an arcuate slot, a securing element extending through eacharcuate slot and the corresponding longitudinal slot of the base forsecuring said saddle casting in adjusted position, remote faces of thebase and saddle casting having adjacent said slots corrugationsextending transversely of the slot and washer plates upon the securingelements having corrugations for coaction with the corrugations of thebase and saddle casting.

3. In a saddle mounting for the Wire line pumping jacks of oil Wellpumps, :1 base adapted to be secured to a suitable support and having alongitudinally extending slot, a saddle casting having a circular lugfitting in the slot, the base having adjacent each end thereof alongitudinally extending slot, the saddle casting having adjacent: eachend thereof an arcuate slot, :1 securing element extending through eacharcuate slot and the corresponding longitudinal slot of the base forsecuring said saddle casting in adjusted position, the upper face of thesaddle casting having a longitudinall extending groove for the receptionof tie saddle and lugs extending upwardly from the face of the saddlecasting at opposite sides of the ends of said groove.

4:. In a saddle mountin for the Wire line pumping jacks of oil wellpu1n)s,'a base adapted to be secured to a suitab e support and having alongitudinally extending slot, a saddle casting having a circular lugtittlng in theslot, the base having adjacent each end 1 thereof alongitudinally extending slot, the

saddle casting having adjacent each end thereof an arcuate slot,asecuring element extending through each arcuate slot and thecorresponding longitudinal slot of the base for securing said saddlecasting in adj usted position, the upper face of the saddle astinghaving a longitudinally extendin" groove for the reception of the saddlean lugs extending upwardly from the face of the saddle casting atopposite sides of the ends of said groove, the faces of said lugsadjacent the ends of the saddle casting being connected by a Web.

5. Ina saddle mounting for the wire line pumping acks of oil well pumps,a base adapted to be secured to a suitable support and having alongitudinally extending slot, a saddle casting having a circular lugfitting in theslot, the base having adjacenteach end thereof alongitudinally extending slot, the

saddle casting having adjacent each end thereof an arcuate slot, asecuring element extending through each arcuate slot and'thecorresponding longitudinal slot of the base for securing said saddlecasting in adjusted position, the upper face of the saddle casting havmg a longitudinally extendinn' groove for the reception of the saddleand ugs extending upwardly from the face of the saddle casting atopposite sides of the ends of said groove, the lugs at one side of thegroove being relatively large and formed with lubricant reservoirs.

In testimony whereof I hercuntoallix my signature.

JAMES R. ROI-3B.

